Corporate Office Properties Trust (COPT) has executed two leases totaling 170,000 square feet for two new developments, including one in Northern Virginia.

COPT said in a news release that it has signed a long-term lease with a subsidiary of an investment-grade Fortune 500 company to deliver a 149,000-square foot building on land the company owns in Northern Virginia. It expects to deliver the building, whose location was not disclosed, in the third quarter of 2018.

COPT, based in Columbia, Md., is an office REIT that owns, manages, develops and acquires office and data center properties in locations that support the U.S. government and its contractors most of whom are engaged in national security, defense and information technology related activities.

The company also owns a portfolio of office properties in select urban/urban-like submarkets.